There are various standards that describe the execution of a cross-cut test in order to determine the adhesion of a coating.

Method A: for tests...

There are various standards that describe the execution of a cross-cut test in order to determine the adhesion of a coating.

Method A: for tests in accordance to ASTM D3359 (for thicknesses >125µm) and DIN EN ISO16276-2 for all films

or

Method B (lattice pattern) for tests in accordance with DIN EN ISO 2409 with thickness 0µm - 250µm and ASTM D3359 (for thicknesses <125µm)

In order to execute a cross-cut test the following procedure is followed:

1. Intersecting cuts (6 cuts with the appropriate spacing, depending on the method and the film thickness) are performed. With Method A the intersecting cuts are at an angle of 30° (X-cut) and with method B the intersecting cuts are at an angle of 90° (lattice pattern).
2. In order to produce these cuts a dedicated cross-cut tester as the ZCC2087 can be used, or alternatively a sharp blade with the appropriate cross-cut templet (ZCT2160). The cross-cut tester is specifically designed to produce a reproducible pattern. Note: Always pull the cross-cut tester.
3. Clean the cut pattern with a soft brush (included in the cross-cut tester).
4. Place an adhesive tape over the lattice parallel to one set of cuts. Ensure good contact with the coating.
5. Evaluate the pattern according to the selected standard.

NOTE: Using an adhesive tape is not a normative reference. Therefore it's possible to use any adhesive tape. However we suggest to use a tape with an adhesive strength on steel between 6N and 10N. As the adhesive strength on coatings can differ to the tape manufacturer's specification on steel. Therefore it is important to always use the same adhesive tape in order to get reproducible results. (e.g. our ACC753 with an adhesive strength on steel of 10N).